JavaWeb_(Spring框架)整合Mybatis加入事务操作数据库

整合Mybatis
　　a)导包：
　　　　i.Spring：基本包、aop、aspects、jdbc、tx、test；
　　　　ii.Mybatis：mybatis-3.4.6
　　　　iii.整合包：mybatis-spring-1.3.2
　　　　iv.三方包：
　　　　　　1.aopalliance
　　　　　　2.aspectj.weaver
　　　　　　3.c3p0-0.9.5.2
　　　　　　4.mchange-commons-java-0.2.11
　　　　　　5.mysql-connector-java-5.1.46-bin
　　　　　　6.ojdbc7
　　b)创建项目结构(package)：bean、service、mapper、test；
　　c)创建配置文件：sqlMapperConfig、applicaitonContext
　　　　　　2、创建测试用例：使用Mapper扫描开发，转账；
　　　　　　3、在service中加入事务：利用Spring-aop事务解决转账异常问题；

　　未添加事务前

package com.Gary.bean;

public class Account {

    private Integer id;

    private String name;

    private Double money;

    //转账金额

    private Double tranferMoney;

    public Double getTranferMoney() {

        return tranferMoney;

    }

    public void setTranferMoney(Double tranferMoney) {

        this.tranferMoney = tranferMoney;

    }

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public Double getMoney() {

        return money;

    }

    public void setMoney(Double money) {

        this.money = money;

    }

}

Account.java

package com.Gary.mapper;

import com.Gary.bean.Account;

//账户mapper接口

public interface AccountMapper {

    //操作数据库扣款和加款

    //扣款

    void subMoney(Account pay);

    //加款

    void addMoney(Account collect);

}

AccountMapper.java

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper

  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.Gary.mapper.AccountMapper">

    <update id="subMoney" parameterType="Account">

        update account set money = money - #{tranferMoney} where id = #{id}

    </update>

      <update id="addMoney" parameterType="Account">

        update account set money = money + #{tranferMoney} where id = #{id}

    </update>

</mapper>

AccountMapper.xml

package com.Gary.service;

public interface AccountService {

    //转账方法

    void tranferAccount();

}

AccountService.java

package com.Gary.service;

import javax.annotation.Resource;

import com.Gary.bean.Account;

import com.Gary.mapper.AccountMapper;

public class AccountServiceImpl implements AccountService{

    @Resource(type = AccountMapper.class)

    private AccountMapper mapper;

    @Override

    public void tranferAccount() {

        Double tranferMoney = 100d;

        Account pay = new Account();

        pay.setId(1);

        pay.setTranferMoney(tranferMoney);

        //先扣款

        mapper.subMoney(pay);

        Account collect = new Account();

        collect.setId(2);

        collect.setTranferMoney(tranferMoney);

        //加款

        mapper.addMoney(collect);

    }

}

AccountServiceImpl.java

package com.Gary.test;

import javax.annotation.Resource;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.Gary.service.AccountService;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration("classpath:applicationContext.xml")

public class MapperTest {

    @Resource(name = "accountService")

    private AccountService as;

    @Test

    public void Test1() {

        as.tranferAccount();

    }

}

MapperTest.java

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 读取配置文件 -->

    <context:property-placeholder location="db.properties"/>

    <!-- 配置 dataSource -->

    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driverClass}"/>

        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>

        <property name="user" value="${jdbc.user}"/>

        <property name="password" value="${jdbc.password}"/>

    </bean>

    <!-- mybatis -->

    <bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>

        <property name="configLocation" value="classpath:sqlMapConfig.xml"/>

    </bean>

    <!-- mapper工厂 -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.Gary.mapper"/>

    </bean>

    <!-- service -->

    <bean name="accountService" class="com.Gary.service.AccountServiceImpl">

    </bean>

</beans>

applicationContext.xml

jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_spring

jdbc.user=root

jdbc.password=123456

db.properties

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE configuration

  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

  "http://mybatis.org/dtd/mybatis-3-config.dtd">

  <configuration>

      <typeAliases>

          <package name="com.Gary.bean"/>

      </typeAliases>

  </configuration>

sqlMapConfig

　　Spring中加入事务　

　　　　a) 配置事务核心管理器: DataSourceTransactionManager；

　　<!-- 需要事务核心管理器 -->

    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <property name="dataSource" ref="dataSource"/>

    </bean>

　　　　b) 配置事务通知 tx:Advice；

    <!-- 配置事务通知 -->

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <tx:attributes>

            <tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>

        </tx:attributes>

    </tx:advice>

　　　　c) 配置aop；

    <!-- 配置aop -->

    <aop:config>

        <aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>

    </aop:config>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 读取配置文件 -->

    <context:property-placeholder location="db.properties"/>

    <!-- 配置 dataSource -->

    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driverClass}"/>

        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>

        <property name="user" value="${jdbc.user}"/>

        <property name="password" value="${jdbc.password}"/>

    </bean>

    <!-- mybatis -->

    <bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>

        <property name="configLocation" value="classpath:sqlMapConfig.xml"/>

    </bean>

    <!-- mapper工厂 -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.Gary.mapper"/>

    </bean>

    <!-- service -->

    <bean name="accountService" class="com.Gary.service.AccountServiceImpl">

    </bean>

    <!-- 需要事务核心管理器 -->

    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- 配置事务通知 -->

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <tx:attributes>

            <tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>

        </tx:attributes>

    </tx:advice>

    <!-- 配置aop -->

    <aop:config>

        <aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>

    </aop:config>

</beans>

applicationContext.xml

package com.Gary.bean;

public class Account {

    private Integer id;

    private String name;

    private Double money;

    //转账金额

    private Double tranferMoney;

    public Double getTranferMoney() {

        return tranferMoney;

    }

    public void setTranferMoney(Double tranferMoney) {

        this.tranferMoney = tranferMoney;

    }

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public Double getMoney() {

        return money;

    }

    public void setMoney(Double money) {

        this.money = money;

    }

}

Account.java

package com.Gary.mapper;

import com.Gary.bean.Account;

//账户mapper接口

public interface AccountMapper {

    //操作数据库扣款和加款

    //扣款

    void subMoney(Account pay);

    //加款

    void addMoney(Account collect);

}

AccountMapper.java

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper

  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.Gary.mapper.AccountMapper">

    <update id="subMoney" parameterType="Account">

        update account set money = money - #{tranferMoney} where id = #{id}

    </update>

      <update id="addMoney" parameterType="Account">

        update account set money = money + #{tranferMoney} where id = #{id}

    </update>

</mapper>

AccountMapper.xml

package com.Gary.service;

public interface AccountService {

    //转账方法

    void updateTranferAccount();

}

AccountService.java

package com.Gary.service;

import javax.annotation.Resource;

import com.Gary.bean.Account;

import com.Gary.mapper.AccountMapper;

public class AccountServiceImpl implements AccountService{

    @Resource(type = AccountMapper.class)

    private AccountMapper mapper;

    @Override

    public void updateTranferAccount() {

        Double tranferMoney = 100d;

        Account pay = new Account();

        pay.setId(1);

        pay.setTranferMoney(tranferMoney);

        //先扣款

        mapper.subMoney(pay);

        //添加异常

        int i=1/0;

        Account collect = new Account();

        collect.setId(2);

        collect.setTranferMoney(tranferMoney);

        //加款

        mapper.addMoney(collect);

    }

}

AccountServiceImpl.java

package com.Gary.test;

import javax.annotation.Resource;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.Gary.service.AccountService;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration("classpath:applicationContext.xml")

public class MapperTest {

    @Resource(name = "accountService")

    private AccountService as;

    @Test

    public void Test1() {

        as.updateTranferAccount();

    }

}

MapperTest.java

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 读取配置文件 -->

    <context:property-placeholder location="db.properties"/>

    <!-- 配置 dataSource -->

    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driverClass}"/>

        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>

        <property name="user" value="${jdbc.user}"/>

        <property name="password" value="${jdbc.password}"/>

    </bean>

    <!-- mybatis -->

    <bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>

        <property name="configLocation" value="classpath:sqlMapConfig.xml"/>

    </bean>

    <!-- mapper工厂 -->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.Gary.mapper"/>

    </bean>

    <!-- service -->

    <bean name="accountService" class="com.Gary.service.AccountServiceImpl">

    </bean>

    <!-- 需要事务核心管理器 -->

    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- 配置事务通知 -->

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <tx:attributes>

            <tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>

        </tx:attributes>

    </tx:advice>

    <!-- 配置aop -->

    <aop:config>

        <aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>

    </aop:config>

</beans>

applicationContext.xml

jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_spring

jdbc.user=root

jdbc.password=123456

db.properties

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE configuration

  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

  "http://mybatis.org/dtd/mybatis-3-config.dtd">

  <configuration>

      <typeAliases>

          <package name="com.Gary.bean"/>

      </typeAliases>

  </configuration>

sqlMapConfig.xml

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